The house located in a built-up area of Tokyo for the architect himself and his wife.
This very narrow site of 43 square meters is surrounded by low-rise apartments and houses.
Main structural ideas of this architecture started with to enjoy company of guests as much as possible by effectively using this limited space.
The architect set foundation slab of the house on a solid ground and maximized the volume of the house calculating height and slanting line regulation.
Most Important feature of this house is the composition of 6 skip floors which gradually change from public to private as the level of the floor goes up. 6 layers starts with semi-basement. Then it continues entrance, kitchen, living room, bedroom, and rooftop.
Those floors are connected by steel frame skeleton stairs, and they provide broad view.
The entrance floor, which is contiguous to a restroom, directly leads guests to semi-basement without interfering owners’ private space.
Those six layers are constructed considering the balance of showing the connection of each space and keeping blind areas that provide residents comfortable and relaxing spaces.
The location of windows is carefully planned using 3D modeling and a scale model in order to avoid glances from neighbors and to take in sunlight at the same time. Also, those windows adopt aluminum-resin sash with shutter that provide great airtightness and fire retardants.
Important element for ventilation system of this house is the air duct which connects the semi-basement to the bedroom utilizing up-current of air that a stairwell arises.
Entrance, window sash, and outer walls, which are surrounded by galvalume steel plate, are in same color tone in purpose of making the house look sizable. Also, the small waves on the outer walls and those light color harmonized the house in its neighborhood.
The 5th layer, which is constructed on the cantilever beam, are utilized as a rooftop and eavesdrop of the parking space.